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Here we report a radiation reduction strategy in the cardiac catheterization laboratory using the Philips (Amsterdam, Netherlands) ECO™ system.
Patient demographic and procedural details from a single catheterization laboratory were analyzed one-month pre and post ECO™ implementation. The primary outcome was air kerma dose reduction. Univariate and multivariate analysis was used to assess for confounding variables.
A total of 298 patients (147 pre-ECO™ implementation and 151 after) underwent coronary angiography. No baseline demographic or procedural differences were found between the groups (Table 1.) With ECO™ a 42% relative reduction in average radiation dose (1.06±0.91Gy vs 0.61±0.64Gy, p<0.0001) for all procedures, a 50% reduction for diagnostic angiograms (0.66±0.45Gy vs 0.33±0.25Gy p<0.0001) and a 37% reduction for percutaneous coronary interventions (1.64±1.07Gy vs 1.03±0.80Gy, p=0.005) was noted in spite of an increase in the number of cine runs. There was no change in the number of stents placed or vessels intervened on. An increase in air kerma product was associated with increasing weight, body mass index (BMI) and number of cine runs (p<0.01). Using a multivariable model with the above as well age and gender, there was a 54.8% relative reduction in radiation exposure with the use of ECO™ (p<0.01.)
We report a 42% relative reduction in the radiation exposure using the ECO™ system with no reduction in catheterization laboratory throughput.
Poster Sessions, Expo North
Sunday, March 10, 2013, 9:45 a.m.-10:30 a.m.
Session Title: Contemporary Issues in Cath Lab Performance
Abstract Category: 22. Performance Improvement
Presentation Number: 1218-271
- 2013 American College of Cardiology Foundation